[9] RFR[XS] 8163018: Slow compiler tests in JPRT

[Vladimir Kozlov]

https://bugs.openjdk.java.net/browse/JDK-8163018
http://cr.openjdk.java.net/~kvn/8163018/webrev/

JDK-8132919 changes missed '\' in few places which affected hotspot_fast_compiler_1 time execution by executing long running tests.
needs_compact3 was also affected by similar but opposite problem - test were not included.

I also added -XX:-TieredCompilation to Test6792161 which significantly reduced its execution time.

Thanks,
Vladimir